US4480401A - Radio-controlled car - Google Patents

Radio-controlled car Download PDF

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Publication number
US4480401A
US4480401A US06/460,896 US46089683A US4480401A US 4480401 A US4480401 A US 4480401A US 46089683 A US46089683 A US 46089683A US 4480401 A US4480401 A US 4480401A
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US
United States
Prior art keywords
braking member
radio
car
controlled car
chassis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/460,896
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English (en)
Inventor
Yukimitsu Matsushiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MATSUSHIRO KK
Original Assignee
MATSUSHIRO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MATSUSHIRO KK filed Critical MATSUSHIRO KK
Assigned to KABUSHIKI KAISHA, MATSUSHIRO reassignment KABUSHIKI KAISHA, MATSUSHIRO ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MATSUSHIRO, YUKIMITSU
Application granted granted Critical
Publication of US4480401A publication Critical patent/US4480401A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H30/00—Remote-control arrangements specially adapted for toys, e.g. for toy vehicles
    • A63H30/02—Electrical arrangements
    • A63H30/04—Electrical arrangements using wireless transmission
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H17/00—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor
    • A63H17/004—Stunt-cars, e.g. lifting front wheels, roll-over or invertible cars
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H17/00—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor
    • A63H17/26—Details; Accessories
    • A63H17/36—Steering-mechanisms for toy vehicles

Definitions

  • This invention relates generally to a radio-controlled car, more specifically to a particular type of radio controlled car which can be operated in the so-called wheelie running such that the car runs on only rear wheels while raising the front wheels, and further turns from the forward direction even when the car runs on in the wheelie running state.
  • radio controlled car which runs with the front wheels raised, so called wheelie running.
  • Such type radio controlled car is so designed in order to shift from the normal running mode to the wheelie running mode that the front wheels are raised by means of moving the center of gravity due to the reaction caused when the forward running speed of the radio controlled car is accelerated.
  • a radio-controlled car which is wirelessly controlled and capable of moving in a wheelie running state, comprises a pair of drive axles which are connected to each other through a differential gear, driving wheels one of which is fixed to each one of said pair of drive axles, a servomotor which is actuated in response to a command signal transmitted from a box control for turning from the forward direction, a braking mechanism which is moved in linkage with said servomotor so as to brake said driving wheel of the turning side to repress the revolution of the wheel, following wheels which are turned to the intended turning direction in linkage with said braking mechanism, and an auxiliary wheel which is turned to the intended turning direction in linkage with said braking mechanism and rolls along the ground during only the wheelies running state.
  • FIG. 1 is a side view showing a substantial structure of the radio controlled car according to the present invention
  • FIG. 2 is an exploded perspective view showing a mechanism for turning from the forward direction of the car
  • FIG. 3 is a plan view showing the forward direction turning mechanism
  • FIG. 4 is a plan view showing an operation of the forward direction turning mechanism.
  • a radio controlled car 1 according to the present invention comprises a body 2, a chassis 3 integrally assembled thereto, rear wheels 4 as driving wheels, and front wheels 5 as following wheels, and the front and rear wheels secured to the chassis.
  • the rear wheels 4 are respectively fixed to drive axles 4a independently of each other, and the drive axles 4a are respectively fixed to side gears 7a which compose a differential gear 7 housed in a differential gear box 6.
  • the differential gear box 6 is integrally fixed with a gear 8 (refer to FIG. 2), which is meshed with a gear fixed to the output shaft of a motor, not shown, through an intermediate gear.
  • the gear 8 is resolved in response to the revolution of the motor. Further, the revolving force is transmitted to the rear wheel 4 through the drive axle 4a.
  • a braking member 9 in the shape of a rectangular frame.
  • the braking member 9 is allowed to be freely moved in the horizontal direction along guide members 10 protruding from the chassis 3. According to this movement, the braking mechanism can apply the brake to the rear wheel 4 which is on the side of the intended turning direction in the following manner.
  • a protruding member 11 having a U shape figure is projectingly secured to the center and inside surface of the front side of the braking member 9 (with respect to the forward direction of the radio controlled car 1), and the protruding member 11 is formed with a slot-shape opening 11a along the axis of the car.
  • the reference numeral 12 denotes a servo-box mainly consisting of a servomotor.
  • the top of an output shaft 12a of the servomotor is fixed with a rotatable lever 13, and a pin 14 is protrudingly secured on the upper surface of the free end of the rotatable lever 13. This pin 14 is allowed to be engaged with the slot 11a of the protruding member 11.
  • the rotatable lever 13 when the servomotor in the servo-box 12 revolves in response to radio-waves transmitted from a control box, not shown, the rotatable lever 13 is rotated responsive to the revolved angle of the motor. Accordingly, the braking member 9 may be moved leftwards or rightwards in the horizontal direction through the pin 14 and the protruding member 11 engaged with the pin 14. Since the rotatable lever 13 is always biased by the returning force of a spring not shown so as to urge the rotatable lever 13 backwards, it will quickly return to the normal position. According to this returning movement, the braking member 9 will also return to the neutral position quickly.
  • a lever 16 is pivotably secured to the chassis 3 through a pin 16c.
  • the lever 16 rotatably supports an auxiliary wheel 15 which will roll along the ground during the wheelie running state so as to support the rear of the body 2.
  • the lever 16 is further extendingly formed with a protruding bar 16a at the forward end thereof.
  • This protruding bar 16a is loosely engaged within a rectangular opening 9a formed in the rear frame side of the braking member 9 and prevented from disengaging with the opening 9a owing to a hooked end 16b formed at the most forward end of the protruding bar 16a.
  • the rear portion of the lever 16, supporting the auxiliary wheel 15 will be rotated rightwards or leftwards about the pin 16c in the reverse direction of the braking member. That is, referring to FIG. 4, the double dotted chain line shows the movement of the front wheels 5 and the lever 16 supporting the auxiliary wheel 15 when the braking member 9 is moved rightwards. In the same manner as the above, the movement of the front wheels 5 and the lever 16 supporting the auxiliary wheel 15 is switched to the opposite direction of the double dotted chain line when the braking member 9 is moved leftwards.
  • a rod 17 is forward-extendingly secured to the side of the front frame of the braking member 9 in opposition to the protruding member 11, and a pin 17a is formed upwardly at the front end surface of the rod 17.
  • the braking member 9 is further composed of a pair of brake linings 18 which are respectively secured to the inner surface on the left and right side frames of the braking member 9.
  • each of the brake linings 18 is so arranged as to face the outer surface of disk plates 19 which are fixed to the drive axles 4a at both sides of the differential gear box 6.
  • one of the brake linings 18 will contact with the corresponding disk plate 19 in accordance with the leftwards or rightwards movement of the braking member 9 so that the brake lining 18 serves as the brake to repress the corresponding driving wheel 4 from revolving.
  • the front wheels 5 are provided with front axles 20 at the inside thereof, which are integrally formed with horizontal arms 21 extending backwards in the forward direction.
  • the rear ends of the arms 21 are respectively formed with pins 22 protruding upwards which support both ends of link bar 23.
  • a protruding member 24 in U-shape is integrally formed backwards at the rear side surface thereof, and the protruding member 24 is additionally formed with a slot-like opening 24a in the axial direction of the car.
  • the slot-like opening 24a is engaged with the pin 17a disposed at the forward end of the rod 17.
  • each of the front axles 20 is formed with a pivot pin 20a which is pivotably supported by the chassis so as to be freely rotated. Accordingly, when the braking member 9 is moved rightwards, the front wheels 5 will be turned leftwards about the pivot pins 20a (as shown by the double dotted chain line in FIG. 4). Similarly when the member 9 is moved leftwards, the front wheels will be turned rightwards.
  • a battery box 25 is slantingly positioned on the chassis 3 (as shown in FIG. 1).
  • a plurality of batteries is housed within the battery box 25 so that the center of gravity is located at a relatively rear area of the body 2 (scarcely forward of the drive axles 4a) on account of the weight of batteries.
  • the car will be shifted into the wheelie running mode by suddenly starting or accelerating and kept running in the wheelie running state.
  • the car runs on the front wheel 5 and the rear wheels 4, so called normal running, when the car is not suddenly started or accelerated.
  • the battery box 25 is fixed (incapable of moving the center of gravity) in this embodiment as given explanation above, the battery box may be moved (the position of the center of gravity can be varied) so as to shift freely between the normal running mode (the front wheels 5 and the rear wheels 4 roll along the ground) and the wheelie running mode by moving the center of gravity.
  • the brake lining 18 disposed at the left side of the braking member 9 contacts to the disk 19 fixed at the left side drive axle 4a, thereby repressing the left side rear wheel 4 from revolving.
  • the radio controlled car 1 is turned leftwards about the left side wheel 4 applied with the brake.
  • the auxiliary wheel 15 is also turned rightward, it does not serve to turn the radio controlled car 1 since it is separated from the ground in the normal running state.
  • the operator intends to turn the radio controlled car rightwards, he may operate the control box to transmit control radio waves for turning rightwards. According to this control signal, the radio controlled car is turned rightwards in a similar manner to the above.
  • the operator intends to shift the car into the wheelie running mode, he may operate the control box to transmit control waves so as to suddenly start or accelerate the radio controlled car 1.
  • the center of gravity will be moved rearwards rather than the drive axles 4a on account of the influence of the inertia caused by the acceleration so that the movement of revolution towards the direction to raise the front wheels 5 is generated.
  • the front wheels 5 are raised and, the auxiliary wheel 15 is landed on the ground; that is, the radio controlled car has been shifted into the wheelie running mode.
  • the operator if the operator intends to turn the car, for example, leftwards, he may operate the control box to transmit control waves for turning leftwards.
  • the revolution of the rear left side wheel 4 is repressed in the same manner as the above and simultaneously, the auxiliary wheel 15 is turned rightward. Consequently, the radio controlled car 1 is turned leftwards about the rear left side wheel 4.
  • the front wheels 5 are also turned leftwards in the same manner as the above, they can not serve to turn the radio controlled car 1 since they are separated from the ground.
  • the operator intends to turn the radio controlled car rightwards, he may operate the control box to transmit control waves for turning rightwards. According to these control waves, the radio controlled car is turned rightwards in the reverse manner as the above. That is, in such manner, the radio controlled car can be turned in the wheelie running mode.
  • the drive axle 4a and rear wheel 4 which are not repressed can be freely revolved on account of the differential gear 7 housed in the differential gear box 6 while the car is turning.
  • the inventive radio controlled car can be freely turned regardless of the wheelie running condition unlike the conventional car.
  • the radio controlled car since the radio controlled car according to the present invention comprises a braking member which is moved by the servomotor actuated in accordance with the direction turning command signal transmitted from the control box, the auxiliary wheel adapted to be rolled along the ground in the wheelie running mode, which can be turned in linkage of the braking member, and further drive wheels repressing mechanism that the intended turning direction side rear wheel fixed to one of the drive axles connected through the differential gear is repressed by the braking member, it can easily be turned even when it is in the wheelie running mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Toys (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
US06/460,896 1982-12-15 1983-01-25 Radio-controlled car Expired - Fee Related US4480401A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1982189425U JPS5993598U (ja) 1982-12-15 1982-12-15 ラジオコントロ−ルカ−
JP57-189425[U] 1983-12-15

Publications (1)

Publication Number Publication Date
US4480401A true US4480401A (en) 1984-11-06

Family

ID=16241030

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/460,896 Expired - Fee Related US4480401A (en) 1982-12-15 1983-01-25 Radio-controlled car

Country Status (6)

Country Link
US (1) US4480401A (fr)
JP (1) JPS5993598U (fr)
DE (1) DE3302578A1 (fr)
FR (1) FR2537881B1 (fr)
GB (1) GB2131704B (fr)
IT (1) IT8320732V0 (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932491A (en) * 1989-03-21 1990-06-12 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Body steered rover
US5322469A (en) * 1992-07-31 1994-06-21 Tyco Investment Corp Vehicle toy with elevating body
US5481257A (en) * 1987-03-05 1996-01-02 Curtis M. Brubaker Remotely controlled vehicle containing a television camera
US5803790A (en) * 1997-01-22 1998-09-08 Mattel, Inc. Toy vehicle with selectively positionable wing
US6024627A (en) * 1997-08-19 2000-02-15 Tilbor; Neil Toy vehicle with gyroscopic action rear wheels
WO2000010668A1 (fr) * 1998-08-24 2000-03-02 Silverlit Toys Manufactory, Ltd. Jouet et jeu programmables
USD426272S (en) * 2000-01-27 2000-06-06 Silverlit Toys (U.S.A.), Inc. Toy vehicle keyboard
USD426591S (en) * 2000-01-27 2000-06-13 Silverlit Toys (U.S.A.), Inc. Top of a car
US6083104A (en) * 1998-01-16 2000-07-04 Silverlit Toys (U.S.A.), Inc. Programmable toy with an independent game cartridge
USD431612S (en) * 2000-01-27 2000-10-03 Silverlit Toys (U.S.A.), Inc. Top, bottom, back, front, and sides of a vehicle
US6250987B1 (en) 1998-01-16 2001-06-26 Silverlit Toys Manufactory Ltd. Programmable toy
US6292653B1 (en) * 1998-02-04 2001-09-18 Michael Volz Servo case
US6315630B1 (en) 2000-02-04 2001-11-13 Mattel, Inc. Remotely controlled skateboard having motion-responsive doll riding thereon
US6390883B1 (en) 1999-04-09 2002-05-21 Silverlit Toys Manufactory, Ltd Programmable toy with remote control
US6550089B1 (en) 2000-10-11 2003-04-22 Bakhytbek Z. Ussen Device for picking-up small-sized litter
US7391320B1 (en) * 2005-04-01 2008-06-24 Horizon Hobby, Inc. Method and system for controlling radio controlled devices
US20100306933A1 (en) * 2009-06-08 2010-12-09 Ussen Bakhytbek Z Self-rolling cleaning device
US8764511B2 (en) 2011-04-29 2014-07-01 Mattel, Inc. Toy vehicle
US9440159B1 (en) 2012-12-21 2016-09-13 Shoot The Moon Products Ii, Llc Rechargeable toy vehicles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1324721A (fr) * 1962-06-08 1963-04-19 Dispositif de commande pour jouets, fonctionnant à l'aide de programmes découpés dans des cartes
US4171592A (en) * 1977-07-18 1979-10-23 Shigeru Saitoh Toy moving car operated by a wireless electric device
US4183174A (en) * 1978-06-22 1980-01-15 George Barris Toy stunt vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1324721A (fr) * 1962-06-08 1963-04-19 Dispositif de commande pour jouets, fonctionnant à l'aide de programmes découpés dans des cartes
US4171592A (en) * 1977-07-18 1979-10-23 Shigeru Saitoh Toy moving car operated by a wireless electric device
US4183174A (en) * 1978-06-22 1980-01-15 George Barris Toy stunt vehicle

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5481257A (en) * 1987-03-05 1996-01-02 Curtis M. Brubaker Remotely controlled vehicle containing a television camera
US4932491A (en) * 1989-03-21 1990-06-12 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Body steered rover
US5322469A (en) * 1992-07-31 1994-06-21 Tyco Investment Corp Vehicle toy with elevating body
US5803790A (en) * 1997-01-22 1998-09-08 Mattel, Inc. Toy vehicle with selectively positionable wing
US6024627A (en) * 1997-08-19 2000-02-15 Tilbor; Neil Toy vehicle with gyroscopic action rear wheels
US6083104A (en) * 1998-01-16 2000-07-04 Silverlit Toys (U.S.A.), Inc. Programmable toy with an independent game cartridge
US6250987B1 (en) 1998-01-16 2001-06-26 Silverlit Toys Manufactory Ltd. Programmable toy
US6292653B1 (en) * 1998-02-04 2001-09-18 Michael Volz Servo case
WO2000010668A1 (fr) * 1998-08-24 2000-03-02 Silverlit Toys Manufactory, Ltd. Jouet et jeu programmables
US6645037B1 (en) 1998-08-24 2003-11-11 Silverlit Toy Manufactory Ltd. Programmable toy and game
US6390883B1 (en) 1999-04-09 2002-05-21 Silverlit Toys Manufactory, Ltd Programmable toy with remote control
USD431612S (en) * 2000-01-27 2000-10-03 Silverlit Toys (U.S.A.), Inc. Top, bottom, back, front, and sides of a vehicle
USD426591S (en) * 2000-01-27 2000-06-13 Silverlit Toys (U.S.A.), Inc. Top of a car
USD426272S (en) * 2000-01-27 2000-06-06 Silverlit Toys (U.S.A.), Inc. Toy vehicle keyboard
US6315630B1 (en) 2000-02-04 2001-11-13 Mattel, Inc. Remotely controlled skateboard having motion-responsive doll riding thereon
US6550089B1 (en) 2000-10-11 2003-04-22 Bakhytbek Z. Ussen Device for picking-up small-sized litter
US7391320B1 (en) * 2005-04-01 2008-06-24 Horizon Hobby, Inc. Method and system for controlling radio controlled devices
US8330583B2 (en) 2005-04-01 2012-12-11 Horizon Hobby, Inc. Method and system for controlling radio controlled devices
US20100306933A1 (en) * 2009-06-08 2010-12-09 Ussen Bakhytbek Z Self-rolling cleaning device
US8764511B2 (en) 2011-04-29 2014-07-01 Mattel, Inc. Toy vehicle
US9440159B1 (en) 2012-12-21 2016-09-13 Shoot The Moon Products Ii, Llc Rechargeable toy vehicles

Also Published As

Publication number Publication date
GB2131704A (en) 1984-06-27
FR2537881B1 (fr) 1986-09-05
IT8320732V0 (it) 1983-02-08
JPS5993598U (ja) 1984-06-25
GB8302061D0 (en) 1983-03-02
FR2537881A1 (fr) 1984-06-22
GB2131704B (en) 1986-02-19
DE3302578A1 (de) 1984-06-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KABUSHIKI KAISHA, MATSUSHIRO, 20-17, MATSUE 4-CHOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MATSUSHIRO, YUKIMITSU;REEL/FRAME:004088/0098

Effective date: 19830110

CC Certificate of correction
REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 19881106